How Do Butterflies Eat?

A butterfly is a flying insect known for its brightly colored wings and distinctive flight patterns. Belonging to the order Lepidoptera, butterflies are characterized by their slender bodies, large wings, and club-tipped antennae. Butterflies undergo a complete metamorphosis, transitioning through four stages: egg, larva (caterpillar), pupa (chrysalis), and adult. Depending on their life stage, butterflies have distinctly different dietary needs. Continue reading to learn how butterflies eat, what they eat, and why these colorful creatures love to drink muddy water.

How Butterflies Eat

Butterflies take in nourishment through their proboscis. A proboscis is a thin, tube-like organ that allows a butterfly to draw liquid from a flower or plant. A butterfly’s proboscis functions much like an elephant’s trunk or a flexible straw, allowing it to drink liquids. After drinking, the butterfly’s proboscis curls back up toward its face to stay out of the way while it flies.

What Butterflies Eat

Butterflies obtain nourishment from drinking flower nectar. But that’s not their only food source. Butterflies will land on pieces of rotten fruit to drink the leftover juice. Vegetable plants like zucchini, pumpkins, radishes, artichokes, and asparagus have blossoms that contain nectar. It’s not unusual to see butterflies making their way through a patch of vegetables to drink vegetable nectar. They also land on herbs with blossoms that yield nectar, including parsley, oregano, fennel, and dill.

Sugar water is another favorite food of butterflies, which is why they may frequent hummingbird feeders. These insects are attracted to sugar. Therefore, if there is a drop or two of juice or soda in a cup or bottle, a butterfly may be attracted to it.

Butterflies sometimes drink from muddy water puddles after a rainstorm. The muddy water contains protein, salt, amino acids, and nitrogen, all of which contribute to the overall health of the butterfly. Sometimes, a group of butterflies will gather around a mud puddle only to take off and land again a few seconds later. This behavior, called puddling, stirs up the minerals in the mud.

In addition to muddy water, butterflies drink sweat for its salt. They occasionally drink urine for the minerals it contains. In rare cases, some butterflies have been observed drinking blood for its minerals, but this is not typical behavior for most species

How Often Butterflies Eat

Butterflies are most active and likely to forage during the warmer hours of the day, typically from late morning to early afternoon, often peaking around midday to mid-afternoon. Butterflies are cold-blooded (ectothermic) animals, meaning they rely on external heat sources to regulate their body temperature. Sunlight provides the warmth they need to fly and feed efficiently. They need an ideal body temperature of about 85ºF to fly easily.

Butterflies Are Attracted to Different Plants

Certain plants are more attractive to specific types of butterflies than others. Monarchs, though not especially dependent on the nectar from milkweed, rely on this plant for laying their eggs. Monarch caterpillars eat milkweed exclusively. Milkweed is their host plant, and monarch caterpillars are dependent on milkweed for nourishment throughout their larval stage.

Monarch butterflies will also forage from other plants such as goldenrod, lilacs, and lantana. Eastern swallowtail butterflies are attracted to phlox, buttonbush, and Carolina jessamine.

A Butterfly Tastes With Its Feet

A butterfly uses its feet to taste a flower and determine whether it’s sugary or bitter. Butterflies don’t have taste buds in their proboscis. Instead, a butterfly has chemoreceptors on its tiny feet. These chemoreceptors function like taste buds. These receptors allow a butterfly to decide if the flower is one it wishes to eat.